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echo: guitar
to: DON DESCHAMPS
from: PAUL WHITEMAN
date: 1998-03-02 09:09:00
subject: Im Back, More or Less

Hi Don;
DD> When you plug it in and turn it on the power tube plates turn
  > cherry red and the fuse blows. This happens rather quickly.
Most likely you have lost your negative bias supply.  Pull the output
tubes and check for a negative voltage of about -40 to -50 between 
the chassis and pin 5 on both the tube sockets.  If it is there then 
you have other problems suck as leaky caps between the phase splitter
(12AT7) and the 6L6 grids.  There is also a 1K5 gris stopper resistor 
mounted directly on the 6L6 sockets.  These go open quite often and 
will cause the same effect.
            Paul
 * 1st 2.00 #1346s * If a drummer is at your door - the knocking sloowwwsss 
down!
--- PCBoard (R) v15.3 (OS/2) 5
---------------
* Origin: FidoNet: CAP/CANADA Support BBS : 416 287-0234 (1:250/710)

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